id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
21	Volumetric light	gongminmin	gongminmin	Implement post process-based volumetric light effect. Like GPU Gems 3 ch13: http://http.developer.nvidia.com/GPUGems3/gpugems3_ch13.html	task	closed	major	4.2.0	Core-Rendering system		fixed